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Surficial geology (geo7_2ag).
Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aaiun-Tarfaya Basin, Province 2066, Abu Gharadiq Basin, Province 2038, Africa, Age, Amhara Plateau, Province 7161, All tags...
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This coverage includes arcs, polygons and polygon labels that describe U.S. Geological Survey defined geologic provinces of the Africa. Each province has a set of geologic characteristics distinguishing it from surrounding provinces. These characteristics may include the dominant lithologies, the age of the strata, and the structural style. Some provinces include multiple genetically-related basins. Offshore province boundaries are generally defined by the 2000 meter bathymetric contour, but where appropriate are defined by the 4000 meter bathymetric contour. In some cases province boundaries are delineated by political boundaries, as in the case of The United States and Canada, because United States petroleum resources...
Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aaiun-Tarfaya Basin, Province 2066, Abu Gharadiq Basin, Province 2038, Africa, Amhara Plateau, Province 7161, Atlas Basin, Province 2062, All tags...
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The Global Geochemical Database for Critical Metals in Black Shales (CMIBS) contains new geochemical data compilations for fine-grained sedimentary rocks in which each geologic material sample has one 'best value' determination for each analyzed species, greatly improving speed and efficiency of use (Granitto and others, 2013). The CMIBS was created and designed to compile and integrate geochemical data from seven continents in order to facilitate petrologic studies, mineral resource assessments and mineral exploration, definition of geochemical baseline values and statistics, environmental impact assessments, paleobiological studies and paleoenvironmental trends through Earth history. and studies in human health...
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Part of star dunes, showing three curving arms with steep slipfaces oriented in various directions, at Tsonab Vlei in the northeastern part of the Namib Desert. Photo by E. T. Nichols. Namibia, South West Africa. No date.
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Dune and interdune deposits in the northwestern Namib Desert. The star dine in the background is approximately 300 feet high. Photo by E. T. Nichols. Namibia, South West Africa. No Date.


    map background search result map search result map Aerial view of longitudinal dune. Namib Desert, Africa. No date. Part of star dunes at Tsonab Vlei in the northeastern part of the Namib Desert. Africa. no date. Dune and interdune deposits in the northwestern Namib Desert. Africa. no date. Global Geochemical Database for Critical Metals in Black Shales Surficial geology of Africa (geo7_2ag) Geologic Provinces of Africa, 2000 (prv7_2ag) Aerial view of longitudinal dune. Namib Desert, Africa. No date. Part of star dunes at Tsonab Vlei in the northeastern part of the Namib Desert. Africa. no date. Dune and interdune deposits in the northwestern Namib Desert. Africa. no date. Geologic Provinces of Africa, 2000 (prv7_2ag) Surficial geology of Africa (geo7_2ag) Global Geochemical Database for Critical Metals in Black Shales